PT-2018-15223 · Cloudbees+1 · Jenkins

Thomas De Grenier De Latour · Published 2018-08-23 · Updated 2022-05-13 · CVE-2018-1999044

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions Jenkins versions 2.137 and earlier Jenkins versions 2.121.2 and earlier

Description A denial of service issue exists due to a form validation problem in CronTab.java for cron expressions. This issue can cause a request handling thread to enter an infinite loop when certain rare dates are entered, potentially resulting in a denial of service. Attackers with Overall/Read permission can exploit this issue.

Recommendations For Jenkins versions 2.137 and earlier, update to a version that fixes the Cron expression form validation issue to prevent infinite loops. For Jenkins versions 2.121.2 and earlier, update to a version that fixes the Cron expression form validation issue to prevent infinite loops. As a temporary workaround, consider restricting access to the cron expression form validation to minimize the risk of exploitation.

Fix

DoS

Infinite Loop

Weakness Enumeration

CWE-835

Related Identifiers

CVE-2018-1999044

GHSA-8QPF-FV36-H4R8

Affected Products

Jenkins

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2018-1999044 · Security Note
• https://osv.dev/vulnerability/CVE-2018-1999044 · Vendor Advisory
• https://jenkins.io/security/advisory/2018-08-15/#SECURITY-790 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-8qpf-fv36-h4r8 · Vendor Advisory
• https://github.com/jenkinsci/jenkins/commit/e5046911c57e60a1d6d8aca9b21bd9093b0f3763 · Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-1999044 · Note